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	<div id="winchm_template_button"><A href="_usbkd_usbdevh.htm" title="Previous topic"><img id="winchm_template_prev" alt="Previous topic" src="../template2/btn_prev_n.gif" border="0"></a><A href="_usbkd_usbfaildata.htm" title="Next topic"><img id="winchm_template_next" alt="Next topic" src="../template2/btn_next_n.gif" border="0"></a></div>
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<A href="introduction6.htm">Debugging Tools for Windows (WinDbg, KD, CDB, NTSD)</A> &gt; <A href="debugger_reference.htm">Debugger Reference</A> &gt; <A href="debugger_commands.htm">Debugger Commands</A> &gt; <A href="specialized_extensions.htm">Specialized Extension Commands</A> &gt; <A href="usb_2_0_extensions.htm">USB 2.0 Debugger Extensions</A> &gt; </div>
	<div id="winchm_template_title">!usbkd.usbep</div>
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	<div id="winchm_template_content"><div id="mainSection"><p>The <b>!usbkd.usbep</b> command displays information about a USB endpoint.</p>
<pre class="syntax"><b>!usbkd.usbep </b><i>StructAddr</i></pre>
<h2><a id="ddk__devobj_dbg"></a><a id="DDK__DEVOBJ_DBG"></a>Parameters</h2>
<p></p>
<dl>
<dt><a id="_______StructAddr______"></a><a id="_______structaddr______"></a><a id="_______STRUCTADDR______"></a>       <i>StructAddr</i>      </dt>
<dd>
<p>Address of a <b>usbport!_HCD_ENDPOINT</b> structure. To get the endpoint list for a USB host controller, use the <a href="#Bookmark2577"><b>!usbkd.usbhcdext</b></a> command.</p>
</dd>
</dl>
<h2><a id="DLL"></a><a id="dll"></a>DLL</h2>
<p>Usbkd.dll
     </p>
<h2>Examples</h2>
<p>Here is one way to find the address of a <b>usbport!_HCD_ENDPOINT</b> structure. First enter <a href="#Bookmark2569"><b>!usbkd.usb2tree</b></a>.</p>
<pre class="syntax" xml:space="preserve"><code>0: kd&gt; !usbkd.usb2tree
...
2)!ehci_info ffffe00001ca11a0 !devobj ffffe00001ca1050 PCI: VendorId 8086 DeviceId 293c RevisionId 0002 
     ...</code></pre>
<p>In the preceding output, the address of the device extension of the FDO is displayed as the argument of the <a href="#Bookmark1377">DML</a> command <b>!ehci_info ffffe00001ca11a0</b>.</p>
<p>Either click the DML command  or pass the address of the device extension to <b>!usbhcdext</b> to get the global endpoint list.</p>
<pre class="syntax" xml:space="preserve"><code>0: kd&gt; !usbkd.usbhcdext ffffe00001ca11a0
...
DeviceHandleList: !usblist ffffe00001ca23b8, DL 
DeviceHandleDeletedList: !usblist ffffe00001ca23c8, DL [Empty]
GlobalEndpointList: !usblist ffffe00001ca2388, EP 
...</code></pre>
<p>Now use the <a href="#Bookmark2595"><b>!usbkd.usblist</b></a> command to get the addresses of <b>_HCD_ENDPOINT</b> structures.</p>
<pre class="syntax" xml:space="preserve"><code>0: kd&gt; !usblist ffffe00001ca2388, EP

list: ffffe00001ca2388 EP
----------
dt usbport!_HCD_ENDPOINT ffffe000020f6970  !usbep ffffe000020f6970
Device Address: 0x00, ep 0x00 Control  Flags: 00000002 dt _USB_ENDPOINT_FLAGS ffffe000020f6990
dt usbport!_ENDPOINT_PARAMETERS ffffe000020f6b18	RootHub Endpoint
...</code></pre>
<p>In the preceding output, <code>ffffe000020f6970 </code>is the address of an <b>_HCD_ENDPOINT</b>structure. Pass this address to <b>!usbkd.usbep</b>.</p>
<pre class="syntax" xml:space="preserve"><code>0: kd&gt; !usbep ffffe000020f6970
Device Address: 0x00, Endpoint Address 0x00 Endpoint Type: Control 
dt USBPORT!_HCD_ENDPOINT ffffe000020f6970
dt USBPORT!_ENDPOINT_PARAMETERS ffffe000020f6b18
RootHub Endpoint

Transfer(s) List: (HwPendingListHead)
--------------------------------------------------------------------------------
    [EMPTY]

Endpoint Reference List: (EpRefListHead)
--------------------------------------------------------------------------------
[00] dt USBPORT!_USBOBJ_REF ffffe000021a64a0 Object ffffe000020f6970 Tag:EPop Endpoint:ffffe000020f6970
[01] dt USBPORT!_USBOBJ_REF ffffe000021264a0 Object ffffe000020f95e0 Tag:EPpi Endpoint:ffffe000020f6970

GEP HISTORY (latest at bottom)
----------------------------------------------------------------------------------------------------
     EVENT                   STATE                     NEXT                      HwEpState
----------------------------------------------------------------------------------------------------
[01] Ev_gEp_Open             GEp_Init                  GEp_Paused                ENDPOINT_PAUSE
[02] Ev_gEp_ReqActive        GEp_Paused                GEp_Active                ENDPOINT_ACTIVE
</code></pre>
<h2><a id="see_also"></a>See also</h2>
<dl>
<dt><a href="#Bookmark2553">USB 2.0 Debugger Extensions</a></dt>
<dt><a href="http://go.microsoft.com/fwlink/p?LinkID=227351">Universal Serial Bus (USB) Drivers</a></dt></dl></div></div>	
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